How are these numbers calculated?

Big Games

How we did last week and who we should root for this week.   Explain

Week of 11/18100.0*Chance in playoffs100.0*Average seed
Terry 79 Andy 80 +7.9
+0.7
DanL 64 Tim 70.5 +1.8
+0.2
Nic 77.5 DanE 69 +0.3
Jen 70 Max 76 +0.2
Bill 122 DanP 90 +0.1
Helmut 81.5 Eric 120.5 -0.1
Week of 11/25100.0*Chance in playoffs100.0*Average seed
Tim 87 Andy 116.5 +0.3
DanN 73.5 Bill 122 -0.1
Max 111.5 Eric 59 +0.1
Week of 12/2100.0*Chance in playoffs100.0*Average seed
DanL 70.5 Andy 139.5 +0.2
Joe 67.5 Bill 88 -0.2
Games Above .500
Chance Will Make Playoffs